Though it can take a while to build up enough cash to put a 20% down payment on an investment property (the typical lender minimum), they can snowball fairly quickly. The key here is to correctly project income and expenses in order to calculate cash flow (the free cash you can put in your pocket after all associated property expenses have been paid). However you have to be sure to include the cost of a property manager in your calculations unless you want to manage the property yourself. Even with a property manager, you may be required to make large repair decisions every now and then – so while this is not a 100% passive activity, you are not directly trading your time for money like traditional employment.
I read about early withdrawal penalties on IRAs/401Ks very often. Almost always with a statement of “locked up” or “can’t touch” until 59.5. I’m sure you and well informed readers as well know about SEPPs in regard to IRAs/401Ks. For those that don’t SEPPs aren’t perfect but they are a way to tap retirement funds penalty free and I will be using in the future as I have over half of my equity investments within retirement accounts. South of a mil, North of a half. Let me add that I think your blog is outstanding.
To get started, log in to your Amazon.com account and then look for the tiny link in the bottom for Amazon Associates.  Sign up there.  When you’re done, it will give you a special link.  For example, mine is improvphotog-20.  Take that and add it to any normal Amazon link.  So you might find a particular baby teething ring you like and go to that page on Amazon.  Now copy the link.  It’ll be really long, but let’s pretend it’s http://amazon.com/baby-teething-ring  Now just write your code on the end like this: http://amazon.com/baby-teething-ring/improvphotog-20  Now all you have to do is post that link all over the place!
Investing in rental properties: Another form of real estate investment, rental investments (i.e. becoming a landlord) could steer you down the passive income path of steady monthly rent checks that you can use to pay off a mortgage loan on the rental property. After the mortgage is paid off, those monthly checks go right into your bank account -- potentially for years to come. 

If you are a professional photographer or have a real flair for photography, then selling your images on other sites could be an idea. This could be done alongside your own photography site, as it is a good way to help get your work viewed by a wider audience. There are numerous stock image websites to contribute to, but choosing a popular high-end site like Shutterstock should ensure your photographs make you some money.
Yet another Amazon service providing the possibility to make money online is the Audiobook Creation Exchange. You can create a standalone audiobook, or create an audio version of your eBook as complementary media. And you can narrate your audiobook yourself, or Amazon can put you in contact with a professional to help. Once sold, you can then earn up to 40% royalties per audiobook.
You can also sell your own products. You can make music in Garage Band and sell it in iTunes, you could write an eBook and sell it within Amazon. You could also do your own crafts and sell them on Etsy or design a Tshirt and sell them on spreadshirt. Or you could do all of these things! Ecommerce is a great way to make passive income online, whether with a physical product or digital product.
…Marketing an eBook is definitely the hardest part. Ebooks have exploded in popularity and the market is unfortunately saturated with crap from people who thought they could write a quick eBook, put it on an affiliate network, and make millions. However, if you CAN find a good way to market (or possibly have others market by having it listed on affiliate networks) then an eBook can be a great way to make some residual income.
Try Uber EATS or DoorDash. Uber EATS offers part-time work that’s similar to driving for Uber or Lyft. Instead of picking up passengers, however, you will pick up food orders and deliver them in your area. Pay works similarly, letting you earn a per-job rate plus tips. Door Dash works similarly, letting consumers order food from restaurants and connecting drivers to pick up and drop off their meals.
Whether you have a website or are still dreaming up ideas for a blog, you can also look into affiliate marketing. With affiliate marketing, you partner with brands and businesses within the content of your website. If you mention a product or service, you link to that produce or service using a unique affiliate code you received when you signed up for that particular affiliate program. From there, you’ll make money any time someone buys a product or service through your link.
This can include advertising, but many businesses also need help just filling up their social media profiles with relevant (and consistent) content. If you enjoy learning about social media and want to take things a step further and make extra money, social media management is a great option. If you’re good at it, it can also open up a lot of doors for you down the road. This is a great article from Small Biz Trends on How to Start Your Own Social Media Business.
Blogging is a great side hustle because you can do it at your own pace anywhere you want. It's not a quick and easy way to make money, but there are a lot of ways to make money side hustling while blogging. You can sell advertising, become an affiliate for other people's products, sell your own online product, and more. It does take time to build up an audience to be able to make a decent amount of money, but once you have a large following, you could earn over $15,000 per month or more (we do).
Evaluate Web sites. Another way to make extra cash in a short amount time – $10 for about 20 minutes of work – is to sign on with UserTesting and evaluate Web sites. You need a computer with a microphone and Internet connection, and you’ll have to fill out a one-page demographic profile. You’ll receive work if your profile matches that of the target audience of sites being tested. Then it’s just a matter of using UserTesting’s screen recorder, which you'll need to download to your computer, to record your verbal comments and on-screen movements as you click through a site. Site owners typically are looking for feedback about whether the Web site is confusing to navigate.
Evaluate Web sites. Another way to make extra cash in a short amount time – $10 for about 20 minutes of work – is to sign on with UserTesting and evaluate Web sites. You need a computer with a microphone and Internet connection, and you’ll have to fill out a one-page demographic profile. You’ll receive work if your profile matches that of the target audience of sites being tested. Then it’s just a matter of using UserTesting’s screen recorder, which you'll need to download to your computer, to record your verbal comments and on-screen movements as you click through a site. Site owners typically are looking for feedback about whether the Web site is confusing to navigate.
A Risk Score of 10 means no risk. A Return Score of 1 means the returns are horrible compared to the risk-free rate. A Feasibility score of 10 means everybody can do it. A Liquidity Score of 1 means it’s very difficult to withdraw your money without a massive penalty. An Activity Score of 10 means you can kick back and do nothing to earn income. To make the ranking as realistic as possible, every score is relative to each other. Furthermore, the return criteria is based off trying to generate $10,000 a year in passive income.

Creating a jobs board website can be another profitable venture. The ‘jobs’ field can be quite saturated, so it is important to find a niche that is still crying out for a jobs board website. Monetize this type of site by charging businesses to list their jobs on your site. Those searching for jobs could also be charged a fee to access the higher paying job adverts.
This is something like Experts Exchange, except that it’s more general in nature. As a professional in just about any field, you can offer your expertise on JustAnswer. They are looking for professionals in various fields who will provide answers to reader’s questions. You can make money online by answering these questions and pointing people in the right direction to get the solutions that they need.
Clearly, there's a lot of demand on Amazon, and if any product is going to sell, it's going to sell well on Amazon. But the goal here is to source the right products that will easily sell at the world's largest online retailer. Generally, products between $10 and $50 sell very well here. Just be sure to do the right market research before jumping on this bandwagon.
Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with logistics like printing, warehousing and customer service. If you have some graphic design skills, then this is a great potential source for your web-based income. 
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